Aeromobile.



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AEROMOBILE.

APPLICATION rILED AUG.11, 19108 Patented 0G13. 27, 1914.

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THE MORRIS PETERS Co., PH01oLlTHo., WASHINGTON. n, c

E1 BERLINER.

AEROMOBILE.

APPLICATION FILED AUG, 11, 190s.

Patented Oct. 27, 1914.

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1HE MORRIS PETERS C0..PH0TD-LITI1 L WASHING roN. D. C.

Fltllll@ EMILE ERLINER, 0F WASHINGTON, DISTRICT OF COLUMBIA.

AEROMOBILE.

Specification of' Letters Patent.

Application filed August 11, 1908.

Fatented Oct. 27, 1914.

Serial No. 447,951.

known as aero-mobiles or helico sters in` which rotary horizontal bladesare employed, arranged at such an angle that they exert a lifting actionupon the machine.

The principal object of theinvention is to provide an improved blade orpropeller structure, which is so shaped and braced as not only topreventbreakage or distortion when subjected to abnormal strain, but tohold each blade at all times in proper relative position to the other,and in proper relation to every other part of its own surface.

With the foregoing and other objects in view, the invention consists inthe novel construction and arrangements hereinafter described andreferred to in the appended claims. i

The invention is illustrated in the accompanying drawings, in which,-

Figure 1 is a side elevation of an aeromobile propeller, constructed inaccordance with my invention. Fig. 2 is a trans-verse sectional viewofthe same on `line 2-2 of Fig. 1, the vertical shaft and cross armsbeing shown in elevation; Fig. 3 is a detail perspective view of aportion of the blade structure, showing the arrangement of one of thebraces; Fig. 4 is a detail section through one of the brace-connectingarms; and Fig. 5 is a detail perspective view, showing one of the braceconnections with the blade.

The base or main frame of the apparatus, as shown in the drawing, ismerely typical. It comprises a. pair of triangular end frames a,connected by tubes 7). The tubes which constitute the flooring and upperstructure, are provided with bearings for the reception of a pair ofvertically disposed parallel shafts o and Z, which are connected bygearing d. On the sha-ft o is a motor, which may be driven by anysuitable power, but is preferably a hydrocarbon motor. This motor asshown conventionally in Fig. 1 mounted'on the shaft c, is rotatableabout a vertical axis and carries a small pinion meshing with the geard.

The vertical shaft 1 carries a sleeve or collar 2, secured in place by akey or the like. From this sleeve extend diametrically opposite socketmembers 2, in which are seated blade-carrying arms 4, which arepreferably of rectangular form in `cross section and gradually taperfrom their inner to their outer ends. 4 i

On the arms are secured fan blades 5, which preferably are formed ofsheet metal, said blades being inclined in opposite directionsrespectively, `and their active faces being slightly concaved by tensionwires 6, which extend vacross the blade surfaces near the outerends'thereof.

The thin metallicblades have reinforcing strips 7 extending along eachedge of their rear surfaces, and extending from side to side of 'theface of each blade are cross strips 8, these being bowed across the arms4, and being permanently secured to the arms and blades 5 bysuitable-rivets, as shown at 9.

' Arranged between the cross strips 8 and the blade, are spacing blocks10 which are located about midway between the arm 4 and the edges of theblade and secured by bolts or rivets 11.

Secured to the vertical shaft are upper and lower arms 12 and 13,disposed parallel with each other and at right angles to the arms 4.These arms 12 and 13 are in the form of T bars in cross section, and arearranged to hold the ends of a number of brace rods or wires that extendfrom the fan blades.

The primary brace rod 14 of the blades is in the form of a tension wirethat passes through an opening 15 formed in the shaft 1. The ends ofthis wire pass to the ends of the arm 4 and extend through openingsformed in small cross bars 16 that are secured to the extreme outer endsof the arms 4 and pass through openings in the blades (see Fig. 3). Theends of the rod are threaded and receive clamping nuts 17, by which itis properly tensioned and held in place. To the lower ends of the crossbars 16 are secured the outer ends of brace rods 18, that pass to thelower arm 13 and eX- tend through openings 19- forrned in said bar.These rods 18 incline forward in the direction of rotative movement ofthe blade to which they are attached `and greatly strengthen the blade.

of auxiliary bracing rods is also employed. rl'hese extend from thearrns 12, 13 to the blades, and at the latter pointiare :connected inthe manner best shown in Fig. 5.

rlghrough the edge battens 7, the .blades 5,2 and cross strips .8, aredrilled vholes for the; Vreception off pins 2d, These vpir-1s project`jbeyond the opposite faces `of the blades, and?y yhave lopenings ,forthe passage of the braces, the latter being threaded and theld .inplacey by .nuts '25. l

Probably the greatest .stra-in .fon each blade These brace's Vpassthrough openings 28 formed in .both the upper and :lower arinsl 1213` atthe saine side as the forward edge of the blade, and are held in 4placeby nuts- 29.` The Jbraces run vin pairs from the upper and vvlowerAfaces ofthe blade, their tension .may nbe readily adjusted ,by `turning:the `nutslf? and 29. In addition yto these, four Iauxiliary `bracesarranged .in .pairs (eee 30e-31) run from the rear :and `lower edges ofthe blades Ato `the yarn'ls 12 and 13, andi are confined by nuts 32.

a These serve to i Atraiisinit the strain vJQQBOL bllrd@ et@ iblad, and

make :the whole fabric :taut and .properly braced and 'tensioned formoving at lhigh speed. Lt will be seen that by arranging the moving.-partsof the motor -to rotate horizontally, thatsaid l motor will ac tas a gyroseope to steady .the vessel while the same is in motion.

Having thus particularly Adescribed my invention, what l claim as. newdesir-e yto secure by Letters Batent 1. In a .flyinginachind'apropel-ler having blades each farmed of sheet inaterial :and @ensei/edtransversely. e serrertns annex- .tending longitudinally ,of the blade,and secured to the central `,pmt-iran of its rear face, and -a plurality.of arched cross strips secured to the edge portions of the b ,lade and,ieXtendigng over `and vsecured ,to Asaid arm. 2. In a dying meChi-ne1:a @reseller baring blades formed of Sheet material. a carrying g ermextending elena' the lenetudualeenvter ,of ,fthe blade and Tsecured 5tothe rear face thereof, reinforcing battens secured te theI edge portionsof the rear face of the blade, and cross strips .extending transverselyof the blade V.and arched over'the carrying arin, vsaid strips beingsecured l(to 'the battei'is and :the anni; v

3. In a flying machine, a-rroneller having cured to the rear face of theblade` reinforc ing battens at the opposite edges of the blade, crossstri-ps arched across the arm,

i Yand secured to the battens and the arm, and ln addition to thecentral braces, a series Sewing :t0 ereh the lei-eide transversely, e e

carryingfarrn secured ,to-,the rear face of the 3 blade, and rigid`ler-acing Lmembers extendy ing across andsecu-red to the y-arin and .tothe is at its upper edge, and from this point eX- g -tend fourtensi'on'braces or wires 26 Aand 27 f connected as beforedeseribed bythe pins 25.

melfenal versions of the blade. A

5. In a machine of the class described,ga revoluble shaft, blade.carrying arins extending therefrom, `tralisversely concaved bladessecured to fsaid arn1s ,cnossarnis carried by ,the shaft .at .pointsabeye and below the blade .ar-Ins, lsaid cross .arms ,being disposed 1at an angle with respect to fthe lengthof the blade aryms,te,nsionrnenibersextending from 'the cross arms to the forward edges of theblades, .and auxiliary members extending `from said bars `'to the rear,edges .of `the ,Inat- ,ing :blade :to permit distribution of the strainfrom blade to blade.

6. In a machine of vthe class described, ,a revoluble shaft with .armsproiecting there.- .fro1 n, blades carried lby Isaid arins, and a,tension Ain ein'gber extending .continuously longitudinally c f said.blades tand `connected at its opposite ends at or -near the outer endsof said blades.

7. Ina machine of the iclass described', a shaft, arms extending-thereirolm blades secured -to said arrns and each proyided with anopening at the Vouter end of vthe arm,

and .hayingtheir ,central poltionsse'cured 1to f .the ,ends of the arms,cross arms-secured to the shaft. tension members lconnecting the upperends of ,the blades to the cross arms, and -tenserl members extendingfrom the lower arins of Vthe b lade cross bars vto the shaft @reesfari/111s, :the attaching point with .the latter arms being in advanceof the face fof-f the blade, wherebygseel members may act as draftdevices for the blades.

8. In y a machine of the class described, a shaft, a cross thereon.blade carrying extending from said shaft, a blade `secured to each armand provided with an opening -at the gouter of the arm, .a c ross.barertending through fthe opening and hayiing a central portion4secured to the 'end of the erna e .Gross secured to 'fthe Shaft, etension lmember connecting the upper arins of the blade cross bars andextending tation, wherebv said members may act as through an opening inthe shaft, and tension draft devices for the blades. 10 membersextending from the lower arms of In testimonv whereof I affix mysignathe blade cross bars to the shaft cross arm, ture, in preseneee oftwo witnesses.

the direction of said tension members eon- EMILE BERLINER. neoting thelower arms of the blade cross Witnesses:

bars with said shaft cross arm being or- A. M. PARKINS.

wardly with respect to the direction of ro- C. S. STURTEVANT.

Copies of this patent may be obtained for ve cents each, by addressingthe Commissioner of Patents,

Washington, D. C.

